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8. The apparatus shown in figure consists of four glass columns connected by horizontal sections. The height of two central column B and C are 49 cm. each. The two outer columns A and D are open to the atmosphere. A and C are maintained at a temperature of 950C while the columns B and D are maintained at 50C. The height of the liquid in A and D measured from the base line are 52.8 cm and 51 cm respectively. Determine the coefficient of thermal expansion of the liquid.
Dear Juhi,
As the liquid in the horizontal tube PQ is at rest,gauge pressure at P and Q will be equal.
=> Po + (rho*g*ha)5 - (rho*g*hb)95 = Po +(rho*g*hd)5- (rho*g*hc)95
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